@article{ZNSL_2016_450_a0,
     author = {S. L. Berlov and K. I. Tyschuk},
     title = {On the connection between the chromatic number of a~graph and the number of cycles, covering a~vertex or an edge},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {5--13},
     publisher = {mathdoc},
     volume = {450},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2016_450_a0/}
}